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July 2012

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Subject:
From:
Victor Hernandez <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, [log in to unmask]
Date:
Thu, 5 Jul 2012 10:25:42 -0500
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A picture is worth one thousand words.   What is the surface finish of the card/board?

Victor,

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Paul Reid
Sent: Thursday, July 05, 2012 10:23 AM
To: [log in to unmask]
Subject: Re: [TN] Copper Dendrites

Hi Neil,

Are you saying that you are getting "Copper Dendrites" growth?

I'd like to see a picture of a copper dendrite. A picture before and after would be nice.

Sincerely,  

 

Paul Reid 

Program Coordinator  

PWB Interconnect Solutions Inc. 
235 Stafford Rd., West, Unit 103
Nepean, Ontario Canada, K2H 9C1 

613 596 4244 ext. 229  

Skype paul_reid_pwb
[log in to unmask] 

 

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Neil Atkinson
Sent: July 4, 2012 12:02 PM
To: [log in to unmask]
Subject: [TN] Copper Dendrites

 

 What is the view of covering vias with solder resist to prevent dendrite growth?

This is an FR4 PCB with OSP finish, SMT reflow both sides and a few through hole components soldered with a selective soldering process...

Thanks in anticipation of the help of the Technet!

Neil


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